using System;

​

public class Program

{

    public static void Main ()

    {

        int pin=4040, bal=10000, b, f, d, total, total1, total2, kk , mm, np;

        string t,trans,names;

        Console.WriteLine("Welcome to BDO ATM Banking");

        for(int a=0; a<=1; a++)

        {

            Console.Write("Enter the pin: ");

            pin=int.Parse(Console.ReadLine());

            if(pin==4040)

            {

                   for(int c=0; c<=1; c++)

                {

                     Console.WriteLine(" [1] Balance Inquiry \n [2] Withdraw \n [3] Deposit \n [4] Change Pin \n [5] Paybills \n [x] Cancel");

                     Console.Write("Please select a transaction: ");

                     t=Console.ReadLine();

                      if (t != "x")

                      {

                          if (t =="1")

                          {

                             Console.WriteLine("The current balance in your account is {0}",bal);

                             Console.WriteLine("Proceed with another transaction? [y] Yes or [n] No: ");

                             trans=Console.ReadLine();

                                 if(trans == "y" || trans == "Y")

                                 {

                                     c=0;

                                 }

                                 else if(trans == "n" || trans == "N")

                                 {

                                    Console.WriteLine(" Thank you for banking with us. Goodbye!");

                                    Console.ReadLine();

                                    break;

                                }

                        }

                         else if (t == "2")

                         {

                            Console.Write("Enter amount to withdraw: ");

                            f=int.Parse(Console.ReadLine());

                            Console.WriteLine("Please collect the cash {0}", f);

                             total = bal - f;

                            Console.WriteLine("The current balance is now {0}",total);

                            Console.WriteLine("Proceed with another transaction? [y] Yes or [n] No: ");

                            trans=Console.ReadLine();

                                if (trans == "y" || trans == "Y")

                                {

                                    c=0;

                                }

                               else if (trans == "n" || trans == "N")

                                {

                                    Console.WriteLine(" Thank you for banking with us. Goodbye!");

                                    Console.ReadLine();

                                    break;

                                }

                        }

                        else if (t == "3")

                        {

                            Console.Write("Enter the amount to be deposit: ");

                            d=int.Parse(Console.ReadLine());

                            total1= bal + d;

                            Console.WriteLine("The current balance is now {0}",total1);

                            Console.WriteLine("Proceed with another transaction? [y] Yes or [n] No: ");

                            trans=Console.ReadLine();

                                if(trans == "y" || trans == "Y")

                                {

                                    c = 0;

                                }

                                else if(trans == "n" || trans == "N")

                                {

                                    Console.WriteLine(" Thank you for banking with us. Goodbye!");

                                    Console.ReadLine();

                                    break;

                                }

                        }

                        else if (t == "4")

                        {

                            Console.WriteLine("Want to change your pin? ");

                            Console.Write("Enter your previous pin: ");

                            kk=int.Parse(Console.ReadLine());

                                for ( int s=0; s<=1; s++)

                                {

                                    Console.Write("Enter your new pin: ");

                                    np=int.Parse(Console.ReadLine());

                                    Console.Write("Re-type your new pin: ");

                                    mm=int.Parse(Console.ReadLine());

                                        if (np == mm)

                                        {

                                            Console.WriteLine("Your pin is changed.");

                                            Console.WriteLine("Proceed with another transaction? [y] Yes or [n] No: ");

                                            trans=Console.ReadLine();

                                            if (trans == "y" || trans == "Y")

                                            {

                                                c=0;

                                            }

                                            else if (trans == "n" || trans == "N")

                                            {

                                                Console.WriteLine(" Thank you for banking with us. Goodbye!");

                                                Console.ReadLine();

                                                break;

                                            }

                                        }

                                        else

                                        {

                                            Console.WriteLine("Try again.");

                                            s=0;

                                        }

                                }

                        }

                        else if (t == "5")

                        {

                            Console.Write("Enter the biller name (Globe, Cepalco, Parasat, Credit Card): ");

                            names=Console.ReadLine();

                            Console.Write("Enter  the bill amount: ");

                            b=int.Parse(Console.ReadLine());

                            total2=bal-b;

                            Console.WriteLine("Your current balance is now {0}",total2);

                            Console.WriteLine("Proceed with another transaction? [y] Yes or [n] No: ");

                            trans=Console.ReadLine();

                                if(trans == "y" || trans == "Y")

                                {

                                    c = 0;

                                }

                                else if(trans == "n" || trans == "N")

                                {

                                    Console.WriteLine(" Thank you for banking with us. Goodbye!");

                                    Console.ReadLine();

                                    break;

                                }

                        }

                }

                    else if(t == "x")

                    {

                        Console.WriteLine("Thank you for banking with us. Goodbye!");

                        Console.ReadLine();

                        break;

                    }

                }

                break;

            }

            if (pin!=4040)

                {

                Console.Write("Sorry you input mismatched pin ");

                Console.WriteLine("Try Again !");

                    a = 0;

                }

        }

    }

}